Since a week ago I used this crawler to have the co-author list of DBLP authors, it worked fine, but it stopped, i don't know where is the problem, because it doesn't shows any error but just doesn't crawls (have a empty file of results) maybe it is the problem on the DBLP page itself. here are the files I've used. Please help to make function this file again because I need to finish a project. please help